A Model for Granular Flows over an Erodible Surface

摘要: Geophysical mass flows, such as debris volcanic avalanches, and landslides, can be initiated consequent to activities. These flows tens of meters in depth hundreds length contain $O(10^6$–$10^8)\,\mathrm{m}^3$ or more material. The bulk flow easily erode the rocks soil on slopes mountains, thereby increasing their size several fold. range scales rheology these especially with erosion, present significant modeling computational challenges. This paper describes an approach incorporate interaction between a flow, erodible bed, topography that bed. kinetic theory for rapid granular is employed model “mixing” layer, interface flowing material basal surface area where erosion occurs. A tractable set equations derived, hyperbolic system motion elevation